root@Zeus:/var/named/etc/namedb$ cat 75.56.64.in-addr.arpa
;       From: @(#)localhost.rev 5.1 (Berkeley) 6/30/90
; $FreeBSD: src/etc/namedb/PROTO.localhost.rev,v 1.6 2000/01/10 15:31:40 peter Exp $
;
; This file is automatically edited by the `make-localhost' script in
; the /etc/namedb directory.
;

$TTL    3600

@       IN      SOA     ns1.yourgsm.com. root.xeshells.net. (
                        20060339
                        3600
                        900
                        3600000
                        3600 )
@ IN NS ns1.yourgsm.com.
@ IN NS ns2.yourgsm.com.

$ORIGIN 75.56.64.in-addr.arpa.
231 IN PTR ns1.XEshells.net.
root@Zeus:/var/named/etc/namedb$